2155717214 has 8 divisors (see below), whose sum is σ = 3695515248. Its totient is φ = 923878800.

The previous prime is 2155717171. The next prime is 2155717243. The reversal of 2155717214 is 4127175512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76989887 + ... + 76989914.

It is an arithmetic number, because the mean of its divisors is an integer number (461939406).

Almost surely, 2^2155717214 is an apocalyptic number.

2155717214 is a deficient number, since it is larger than the sum of its proper divisors (1539798034).

2155717214 is a wasteful number, since it uses less digits than its factorization.

2155717214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153979810.

The product of its digits is 19600, while the sum is 35.

The square root of 2155717214 is about 46429.7018512934. The cubic root of 2155717214 is about 1291.8058984833.

The spelling of 2155717214 in words is "two billion, one hundred fifty-five million, seven hundred seventeen thousand, two hundred fourteen".